/*
   @Copyright:LeetCode
   @Author:   tjyemail
   @Problem:  http://leetcode.com/problems/same-tree
   @Language: C++
   @Datetime: 19-07-15 10:31
   */

/**
 * Definition for a binary tree node.
 * struct TreeNode {
 *     int val;
 *     TreeNode *left;
 *     TreeNode *right;
 *     TreeNode(int x) : val(x), left(NULL), right(NULL) {}
 * };
 */
class Solution {
public:
	bool isSameTree(TreeNode* p, TreeNode* q) {
		if(p==NULL && q==NULL) return true;
		if(p==NULL || q==NULL) return false;
		if(p->val!=q->val) return false;
		return isSameTree(p->left,q->left) && isSameTree(p->right,q->right);
	}
};
